Funding Calculator
How much should you raise — and when?
Calculate the round size you actually need based on burn, milestones and 18-month runway. With dilution preview.
9,012 calculations4.8 ratingUpdated June 2026
Your funding workbench
Set burn, runway target and buffer — every metric (raise size, allocation, stage fit) updates instantly.
Startup funding calculator — size your raise
Burn × Runway × (1 + Buffer) with June 2026 stage benchmarks.
Quick Fill by Stage
Funding Parameters
Typical: $15K-50K for Seed
Recommended: 18-24 months
Standard: 20-30% for unexpected expenses
Your Funding Timeline
💡 Start fundraising at month 9 (allow 3-6 months to close)
Funding breakdown
Base
$900K
18 mo runway
Buffer
$180K
Safety margin
Total raise
$1.08M
Suggested allocation
Where you fit
Your raise is typical for a Seed round
Top insights · what this means for you
Runway math
At $50K/mo burn, this gives you 18 months of operating runway.
Fundraise window
Start fundraising by month 9 — leave 9+ months before runway ends to keep leverage.
Expected dilution
Typical Seed: 15–25%. You'd give up $162K–$270K in equity value.
Milestone target
This raise should fund PMF or a clear revenue milestone for the next round.
Capital projection
See cumulative burn vs target raise — toggle scenarios and spot your fundraising window.
Scenario comparison
Compare four raise strategies side-by-side and apply the one that fits your story.
Scenario comparison
Four raise strategies side-by-side — apply any with one click.
Lean Mode
Minimal burn, shorter runway
Conservative
Lower burn, longer runway
Current Plan
Your live settings
Aggressive Growth
Higher burn, same runway
Turn the number into a plan
Drop these numbers into your business plan and brief investors in minutes.
Next step
Bake this raise into a fundable business plan
We'll pre-fill burn, runway, use of funds and milestones from this calculation.
Funding Report
Formula, benchmarks, expert tips, mistakes and real case studies — all in one read.
Startup funding formula
Funding Needed = Monthly Burn × Runway Months × (1 + Buffer %)Step-by-Step Breakdown
Calculate base funding
Monthly Burn Rate × Desired Runway
Your minimum capital requirement to survive the runway period.
Add growth buffer
Base Funding × (1 + Buffer %)
Typically 20–30% buffer for unexpected expenses and opportunities.
Align with milestones
Tie funding to key milestones (PMF, $1M ARR, product launch) to maximize valuation at next raise.
Example Calculation
Funding round benchmarks (June 2026)
Typical funding amounts by stage to help you calibrate your ask.
| Industry | Low | Average | High | Key drivers |
|---|---|---|---|---|
|
Pre-Seed
|
$50,000 | $250,000 | $500,000 | |
|
Seed
|
$500,000 | $2,000,000 | $5,000,000 | |
|
Series A
|
$5,000,000 | $15,000,000 | $30,000,000 | |
|
Series B
|
$15,000,000 | $40,000,000 | $100,000,000 |
* Benchmarks reflect first 6–12 months to launch in USD. Figures vary by region, team size, and market conditions. Click any source to verify the underlying data.
Expert tips for a 2026 raise
Raise for 18–24 months
Enough time to hit milestones without constant fundraising pressure.
💡 Action: Calculate runway at current burn and add buffer for scaling.
Lead with milestones
Investors want to see what you'll achieve with their money.
💡 Action: Define 3–5 milestones the funding will enable (users, revenue, product).
Start early
Fundraising takes 3–6 months. Begin with 9+ months runway remaining.
💡 Action: Set up investor CRM and start relationship building 9 months out.
Document AI efficiency
2026 investors price in AI leverage. Show burn-per-output.
💡 Action: Add a slide quantifying AI tooling savings vs 2023 benchmarks.
Common fundraising mistakes to avoid
Raising too little
Under-raising forces constant fundraising mode and distraction.
✓ Instead: Calculate 18–24 months runway plus buffer, then raise that amount.
Raising too much
Excessive dilution at a low valuation hurts every future round.
✓ Instead: Model future rounds to understand cumulative dilution impact.
Ignoring the buffer
Things always take longer and cost more than expected.
✓ Instead: Always add 20–30% buffer to your funding target.
Waiting until desperate
Raising at 3 months runway means weak negotiating position.
✓ Instead: Start fundraising with 9+ months runway remaining.
Real-world fundraising examples
See how other startups calculated and raised their funding rounds.
AI Healthcare Startup
Challenge: Needed to calculate optimal raise for FDA approval timeline.
Monthly Burn
$120K
Runway Target
24 months
Buffer Added
30%
Total Raised
$3.74M
Outcome: Secured funding with clear milestones tied to regulatory timeline, avoiding down round risk.
Climate Tech Venture
Challenge: Hardware development required precise capital planning.
Development Cost
$2.1M
Go-to-Market
$900K
Buffer
$600K
Total Raised
$3.6M
Outcome: Detailed use-of-funds breakdown convinced investors, closing round 40% oversubscribed.
* Case studies are based on industry averages and anonymized data from similar companies.
Startup Valuation Calculator
Defensible valuation, four methods.
Guide: How much funding do you need?
Founder-grade guide with frameworks & examples.
Deeper answers founders ask for
How much should you actually raise?
The defensible formula is monthly net burn multiplied by target runway, plus a buffer for the plan being wrong. Eighteen to twenty-four months of runway is the standard target because the next round needs twelve to eighteen months of progress plus three to six months of fundraising. Add 15-30% on top: hiring takes longer than planned, revenue arrives later than modelled, and the round itself consumes founder time. So a team burning $50k a month targeting eighteen months raises roughly $900k of operating need plus buffer, landing near $1.0m-$1.2m. Raising materially more than that at seed usually costs more in dilution than it buys in safety, and sets a valuation bar the Series A must clear.
- Raise = net monthly burn × 18-24 months × 1.15-1.30 buffer
- Runway must cover the milestone plus 3-6 months of fundraising
- Over-raising sets a next-round bar that is expensive to miss
What milestone does your next round need to hit?
Investors price the next round on evidence, not effort, so runway should be sized to a specific, provable milestone. At pre-seed to seed that is usually product in market with retention evidence and a repeatable acquisition channel. At seed to Series A the common bar in software is roughly $1m-$2m ARR growing 2.5-3x annually with net revenue retention above 100% for B2B, or clear cohort retention and payback under twelve months for consumer. Write the milestone down before choosing the raise amount, then check whether the burn plan actually reaches it inside the runway. If it does not, the answer is usually a cheaper plan rather than a bigger round, because a missed milestone with money left is recoverable and a missed milestone with no cash is not.
How accurate is a calculator like this?
A calculator is a structured estimate, not a valuation, quote or forecast. Its accuracy depends entirely on the quality of the inputs you feed it and on how well the benchmark ranges match your stage, geography and sector. Treat the output as a range with roughly ±30% around it, and use it for three things: sanity-checking a number you already have in mind, comparing scenarios against each other, and finding which single input moves the result most. That last use is the valuable one — it tells you which assumption is worth spending real research time on before you commit money.
- Compare scenarios rather than trusting a single absolute number
- Identify the input with the largest swing and verify that one first
- Re-run quarterly — benchmarks and costs move faster than most plans assume
Which inputs do founders most often get wrong?
Four consistently: underestimating time to first revenue, excluding founder salary or opportunity cost, ignoring taxes and payment processing on the revenue line, and assuming a straight-line ramp where real growth is lumpy. The combined effect is usually a 30–50% optimistic bias. A quick correction: take your revenue assumption, halve it, take your timeline, double it, then check whether the plan still works. If it does not survive that adjustment, the plan depends on everything going right — which the failure data shows is the least likely of all scenarios.
What should you do with the result?
Turn the number into a decision and a threshold. If the output is a cost, it becomes the amount you need in the bank before you start, plus a buffer of at least three months. If it is a valuation or funding figure, it becomes the opening range for a conversation, not a price. If it is a runway or break-even number, it becomes a calendar date with a review attached. Numbers that never become dates or thresholds do not change behaviour — and the point of running the calculation was to change what you do next week, not to produce a slide.
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Industry-Standard Formulas
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Created by entrepreneurs who've used these metrics to raise funding and scale their companies.
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